Fast ferroelectric phase shift controller for accelerator...

Field emission cathode and electromagnetic wave generating...

Field emission cathode gating for RF electron guns and...

Field emission cathode gating for RF electron guns and...

Field emission cathode gating for RF electron guns and...

Field emission electron source, electron gun and cathode ray...

Field-emission cold cathode for dual-mode operation useable in a

Filter apparatus for a magnetron

Flat display device

Flat-field planar cavities for linear accelerators and storage r

Focus voltage control arrangement

Focusing device with permanent magnets for electron tube and ele

Folded waveguide traveling wave tube having polepiece-cavity...

Four-cavity velocity modulation tube

Frequency modulated ballast with loosely coupled transformer...

Frequency multiplier including grid having plural segments

Frequency-selective loss technique for oscillation prevention in

Frequency-spreading coupler